<template>
	<view class="cart-container" v-if="cart.length !==0">
    <!-- 收获地址组件 -->
    <my-address></my-address>
		<view class="cart-title">
      <!-- 左侧的图标 -->
		  <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的为文本 -->
      <text class="cart-title-text">购物车</text>
		</view>
    <!-- 循环渲染购物车中的商品信息 -->
    <!-- 滑动删除按钮 -->
    <uni-swipe-action>
      <block v-for="(goods,i) in cart" :key="i">
        <uni-swipe-action-item :options="options" @click="swiperItemClickHandler(goods)">
          <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!--结算组件 -->
    <my-settle></my-settle>
	</view>
  <!-- 空白购物车的页面 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也</text>
  </view>
</template>

<script>
  // 引入封装好的购物车数据
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState,mapMutations} from 'vuex'
	export default {
    // 使用mixins
    mixins:[badgeMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
		data() {
			return {
				options:[{
          text:'删除',
          style:{
            backgroundColor:"#c00000"
          }
        }]
			};
		},
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      radioChangeHandler(e){
        this.updateGoodsState(e)
      },
      numberChangeHandler(e){
        this.updateGoodsCount(e)
      },
      // 点击删除按钮 获取商品id 完成删除商品操作
      swiperItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }
	}
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
  .cart-title{
    height: 40px;
    display: flex;
    align-items: center;
    padding-left: 5px;
    border-bottom: 1px solid #efefef;
    
    .cart-title-text{
      font-size: 14px;
      margin-left: 10px;
    }
  }
  .empty-cart{
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
    .empty-img{
      width: 90px;
      height: 90px;
    }
    .tip-text{
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }
</style>
